CN219103934U

CN219103934U - Floating height detection device

Info

Publication number: CN219103934U
Application number: CN202223370805.4U
Authority: CN
Inventors: 张�浩; 赵同志
Original assignee: CYG Semiconductor Equipment Zhuhai Co Ltd
Current assignee: CYG Semiconductor Equipment Zhuhai Co Ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-05-30
Anticipated expiration: 2032-12-14

Abstract

The utility model discloses a floating height detection device, and relates to the technical field of screw detection, wherein the floating height detection device comprises a base and a detection assembly; the detection component is elastically connected to the base and can slide relative to the base, the detection component comprises a displacement sensor and a reference piece, the displacement sensor comprises a shell and a contact rod movably mounted on the shell, the reference piece is fixed relative to the shell and sleeved on the outer side of the contact rod, and the end part of the contact rod extends out of the reference piece. The utility model can realize the elastic contact between the reference piece and the workpiece, and protect the displacement sensor.

Description

Floating height detection device

Technical Field

The utility model relates to the technical field of screw detection, in particular to a floating height detection device.

Background

Currently, screws are a common industrial necessity, and are widely used in the manufacturing industries of electronics, machinery, hardware and the like. Along with the improvement of the living standard of people, the requirements of people on products are gradually improved, screw locking procedures are needed to be carried out on the products in the process of product assembly, and the phenomenon of floating is easy to occur in the process of screw locking. In the related art, a sensor is generally used for detecting the floating height of a screw, but a reference surface of the sensor is easily in hard contact with a workpiece, so that the sensor is damaged, and the service life of the sensor is reduced.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a floating height detection device which can prolong the service life of a sensor.

According to an embodiment of the utility model, a float-height detection device includes:

a base;

the detection assembly is elastically connected to the base and can slide relative to the base, the detection assembly comprises a displacement sensor and a reference piece, the displacement sensor comprises a shell and a contact rod movably mounted on the shell, the reference piece is fixed relative to the shell and sleeved on the outer side of the contact rod, and the end part of the contact rod extends out of the reference piece.

The floating height detection device provided by the embodiment of the utility model has at least the following beneficial effects:

when the contact rod stretches out of the reference piece for screw detection, the contact rod is firstly contacted with the screw, the contact rod is pressed towards the shell body to retract until the reference piece is contacted with the surface of the workpiece, and as the detection assembly is slidably mounted on the base and is elastically connected with the base, the detection assembly can slide on the base when the reference piece is contacted with the workpiece, so that the elastic contact between the reference piece and the workpiece is realized, the displacement sensor is protected, and the service life is prolonged.

According to some embodiments of the utility model, the base includes a straight rail, the detection assembly further includes a mounting assembly slidably mounted to the straight rail, and the housing and the datum member are fixedly mounted to the mounting assembly.

According to some embodiments of the utility model, the base further comprises an upper stopper connected to the top end of the straight rail, and the mounting assembly is elastically connected to the upper stopper.

According to some embodiments of the utility model, the mounting assembly comprises a first connecting block, one end of which is connected with the upper limit block through a first spring.

According to some embodiments of the utility model, the base further comprises a lower stopper connected to a bottom end of the straight rail, and the first connecting block is located between the upper stopper and the lower stopper.

According to some embodiments of the utility model, the mounting assembly further comprises a guide block slidably disposed on the straight rail, and the first connecting block is connected to the guide block.

According to some embodiments of the utility model, the mounting assembly further comprises a second connection block mounted to the first connection block, the housing and the datum are both mounted to the second connection block.

According to some embodiments of the utility model, the mounting assembly further comprises a spacer block mounted to the second connection block, the datum member being mounted to the spacer block.

According to some embodiments of the utility model, the displacement sensor further comprises a mounting bracket for securing to the housing.

According to some embodiments of the utility model, the shell is provided with a through hole, the contact rod penetrates through the through hole, the shell is provided with a substrate, the contact rod is provided with a limiting part and a brush holder arranged on the substrate in a sliding mode, the limiting part limits the distance of the contact rod extending out of the through hole, the contact rod is further provided with a second spring, one end of the second spring is abutted to the shell, and the other end of the second spring is abutted to the brush holder.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a floating height detection device according to the present utility model;

FIG. 2 is a schematic view of another structure of the floating height detecting unit according to the present utility model;

FIG. 3 is a schematic view of another structure of the floating height detecting unit according to the present utility model;

FIG. 4 is a schematic diagram of the displacement sensor of FIG. 1;

fig. 5 is a schematic view of the structure of the contact lever in fig. 4.

The attached drawings are identified:

a base 100, an upper stopper 110, a lower stopper 120, and a straight guide 130;

the displacement sensor 200, the shell 210, the mounting support 211, the through hole 212, the contact rod 220, the limiting part 221, the brush holder 222 and the second spring 223;

a reference 300;

the mounting assembly 400, the first connection block 410, the first spring 420, the guide block 430, the second connection block 440, and the pad 450.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 3, the floating height detecting device according to an embodiment of the present utility model includes a base 100 and a detecting component, where the detecting component is slidably disposed on the base 100, that is, the detecting component may slide up and down on the base 100, and the detecting component is elastically connected to the base 100, so as to implement elastic contact between the detecting component and a workpiece. The sensing assembly includes a displacement sensor 200 and a reference 300, the displacement sensor 200 converting a change in the amount of displacement being measured into a change in an electrical quantity, such as a voltage, current, impedance, etc. The displacement sensor 200 comprises a housing 210 and a contact rod 220, wherein the contact rod 220 is movably arranged on the housing 210 and penetrates out of the housing 210, so that detection of screws is facilitated. The reference member 300 is sleeved outside the contact rod 220, and it should be noted that the end portion of the contact rod 220 extends out of the reference member 300, that is, the reference member 300 does not completely cover the contact rod 220, so that the floating height of the screw is conveniently detected.

Specifically, when the contact rod 220 extends out of the reference piece 300 and the screw is detected, the contact rod 220 is firstly contacted with the screw, the contact rod 220 is pressed towards the shell 210 to retract until the reference piece 300 contacts with the surface of the workpiece, and the detection assembly is elastically connected to the base 100 and can slide on the base 100, so that when the reference piece 300 contacts with the workpiece, the detection assembly can slide on the base 100, the elastic contact between the reference piece 300 and the workpiece is realized, and the displacement sensor 200 is protected, thereby prolonging the service life.

It should be noted that, in some embodiments, the reference member 300 may be cylindrical or square, and may be adapted to different workpiece surfaces, with low precision requirements on the workpiece, high fault tolerance, and strong matching. The middle part of the reference member 300 is hollow, i.e., the inner wall of the reference member 300 is not in contact with the contact rod 220, so that the contact rod 220 is prevented from rubbing against the reference member 300, and abrasion of the contact rod 220 is prevented.

It should be noted that, the distance between the end of the reference member 300 and the end of the contact lever 220 is fixed without using a floating height detecting device or after the detection is completed, so as to realize the fixed point detection, and the reference point is not required to be repeatedly checked, thereby improving the CT of the device.

The reference member 300 is fixed to the housing 210, that is, when the reference member 300 contacts the workpiece, the reference member 300 slides on the base 100 together with the housing 210, so that the displacement sensor 200 elastically contacts the workpiece.

Referring to fig. 4 and 5, the housing 210 is provided with a through hole 212, the contact bar 220 is penetrated through the through hole 212, and the contact bar 220 is provided with a limiting part 221, so that the contact bar 220 can be prevented from sliding out of the housing 210, and the distance that the contact bar 220 extends out of the through hole 212 can be limited, thereby ensuring that the distance between the end of the reference plane and the end of the contact bar 220 is fixed, and the reference point is not required to be repeatedly checked. The housing 210 is provided with a substrate, the contact bar 220 is provided with a brush holder 222, the brush holder 222 is slidably disposed on the substrate, the displacement sensor 200 can be connected with a data recording meter such as a voltmeter and an ammeter, and when the brush holder 222 slides on the substrate, data in the data recording meter can be changed. The contact lever 220 is further provided with a second spring 223, one end of the second spring 223 is abutted against the housing 210, and the other end is abutted against the brush holder 222, so that the reset of the contact lever 220 is facilitated, and the hard damage of the contact lever 220 can be reduced.

Specifically, when the screw is detected, the end of the contact rod 220 is abutted against the screw, the contact rod 220 is retracted toward the housing 210, the brush holder 222 slides on the substrate, the spring is compressed until the end face of the reference member 300 contacts the surface of the workpiece, the reference member 300 slides on the base 100 together with the displacement sensor 200, the sliding is kept for a certain distance, the numerical value of the data record table is kept unchanged, and the measurement is completed. If the value of the data record table is slightly different from the original value or the value not floating, the screw is proved to have no floating height, and if the value of the data record table is greatly different from the original value or the value not floating height, the screw is proved to have the floating height phenomenon.

It can be appreciated that the limiting portion 221 and the brush holder 222 may be connected by a third spring, that is, two ends of the brush holder 222 are connected by springs, so as to facilitate the reset of the contact rod 220.

Referring to fig. 2, in some embodiments of the present utility model, the base 100 includes a straight guide rail 130, the detection assembly further includes a mounting assembly 400, and the mounting assembly 400 is slidably mounted on the straight guide rail 130, so that vertical compression of the displacement sensor 200 is ensured, and detection accuracy is improved; the housing 210 and the reference member 300 are fixedly mounted on the mounting assembly 400, so that the housing 210 and the reference member 300 can slide on the base 100 along with the mounting assembly 400, and elastic contact between the reference member 300 and the workpiece is realized, thereby protecting the displacement sensor 200.

Referring to fig. 1, the base 100 further includes an upper stopper 110, and the upper stopper 110 is connected to the top end of the straight rail 130, so that the distance that the mounting assembly 400 slides upward on the base 100 can be limited, the mounting assembly 400 is elastically mounted on the upper stopper 110, so that the sliding speed of the mounting assembly 400 on the base 100 can be controlled, and the reaction force generated by the contact of the reference member 300 with the workpiece can be absorbed.

Referring to fig. 2, the mounting assembly 400 includes a first connection block 410, and one end of the first connection block 410 is connected with the upper stopper 110 through a first spring 420, so that the sensing assembly can be elastically contracted, absorb a reaction force generated by contact, and compensate for an assembly error. The housing 210 and the reference member 300 are fixed with respect to the first connection block 410, so that the first connection block 410 can drive the housing 210 and the reference member 300 to move together, thereby realizing the elastic contact of the displacement sensor 200.

Specifically, when the reference member 300 contacts the surface of the workpiece, the first connecting block 410 slides upward on the straight guide rail 130, compresses the first spring 420, and drives the displacement sensor 200 to move upward by the first connecting block 410, so as to realize elastic contact between the reference member 300 and the workpiece. After the detection, the first spring 420 has a tendency to be restored as it is, and the first connection block 410 slides down the straight guide 130, so that the first spring 420 is restored as it is.

In some embodiments of the present utility model, two first springs 420 are provided, and are spaced apart from the upper limiting block 110, so as to increase the stability of the detection assembly. It should be understood that three first springs 420 may be disposed, and the first springs may be disposed at intervals on the upper limiting block 110, or one first spring may be disposed, which is not limited herein. Both the upper stopper 110 and the first connection block 410 are provided with grooves capable of accommodating the first springs 420, so that the first springs 420 are prevented from being excessively compressed, and cannot be restored.

Further, referring to fig. 2, the base 100 further includes a lower stopper 120, and the lower stopper 120 is connected to the bottom end of the straight rail 130, so that the distance of the installation assembly 400 sliding downward on the base 100 can be limited, and the first connection block 410 is located between the upper stopper 110 and the lower stopper 120, so that the first connection block 410 is prevented from sliding out of the straight rail 130, the whole elastic vertical stroke is constrained, and the normal operation of each component is ensured.

It should be noted that, the front side of the upper limiting block 110 is flush with the front side of the lower limiting block 120, and the front side of the first connecting block 410 protrudes from the front side of the lower limiting block 120, so as to prevent the lower limiting block 120 from affecting the operation of the displacement sensor 200, thereby affecting the accuracy of the detection result.

Referring to fig. 2, the mounting assembly 400 further includes a guide block 430, the guide block 430 is slidably disposed on the straight guide rail 130, and the first connection block 410 is connected to the guide block 430 to facilitate sliding of the first connection block 410 on the straight guide rail 130. It should be noted that, the height of the guide block 430 should be smaller than the height of the first connecting block 410, so that the guide block 430 can be prevented from affecting the movement of the first connecting block 410.

Referring to fig. 2, the mounting assembly 400 further includes a second connection block 440, the second connection block 440 being mounted at a lower portion of the first connection block 410, and the housing 210 and the reference member 300 being mounted at the second connection block 440, thereby facilitating screw detection. It should be noted that, the second connection block 440 does not contact the lower limiting block 120, and when the first connection block 410 slides up and down on the straight guide rail 130, the first connection block 410 drives the second connection block 440 to move up and down, so as to realize elastic contact between the displacement sensor 200 and the workpiece.

Referring to fig. 3, the mounting assembly 400 further includes a spacer 450, and the spacer 450 is mounted at the lower end of the second connection block 440, facilitates the mounting of the reference member 300, and can protect the reference member 300.

Referring to fig. 4, the displacement sensor 200 further includes a mounting bracket 211, and the mounting bracket 211 is used for fixing the housing 210, so as to prevent the housing 210 from moving during detection to cause inaccuracy of the detection result. Specifically, the mounting support 211 includes two side bending portions, the housing 210 is provided with a recess for accommodating the bending portions, and the mounting support 211 is fixed by screws, so that the housing 210 is fixed, the fixing of the displacement sensor 200 can be realized without punching holes on the displacement sensor 200, and the operation is simple and the installation is convenient.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. A float-height detection device, comprising:

a base (100);

the detection assembly is elastically connected to the base (100) and can slide relative to the base (100), the detection assembly comprises a displacement sensor (200) and a reference piece (300), the displacement sensor (200) comprises a shell (210) and a contact rod (220) movably mounted on the shell (210), the reference piece (300) is fixed relative to the shell (210) and sleeved on the outer side of the contact rod (220), and the end part of the contact rod (220) extends out of the reference piece (300).

2. The float-height detection device of claim 1, wherein said base (100) includes a straight rail (130), said detection assembly further including a mounting assembly (400) slidably mounted to said straight rail (130), said housing (210) and said reference member (300) being fixedly mounted to said mounting assembly (400).

3. The floating height detection device according to claim 2, wherein the base (100) further comprises an upper stopper (110) connected to the top end of the straight guide rail (130), and the mounting assembly (400) is elastically connected to the upper stopper (110).

4. A float-height detection device according to claim 3, wherein the mounting assembly (400) comprises a first connection block (410), one end of the first connection block (410) being connected to the upper stopper (110) by a first spring (420).

5. The floating height detection device according to claim 4, wherein the base (100) further comprises a lower stopper (120) connected to a bottom end of the straight guide rail (130), and the first connection block (410) is located between the upper stopper (110) and the lower stopper (120).

6. The floating height detection device according to claim 4, wherein the mounting assembly (400) further comprises a guide block (430), the guide block (430) is slidably disposed on the straight guide rail (130), and the first connection block (410) is connected to the guide block (430).

7. The float-height detection device of claim 4, wherein said mounting assembly (400) further comprises a second connection block (440) mounted to said first connection block (410), said housing (210) and said reference member (300) being both mounted to said second connection block (440).

8. The float-height detection device of claim 7, wherein said mounting assembly (400) further comprises a spacer block (450) mounted to said second connection block (440), said reference member (300) being mounted to said spacer block (450).

9. The float-height detection device according to claim 1, wherein the displacement sensor (200) further comprises a mounting bracket (211) for fixing to the housing (210).

10. The floating height detection device according to claim 1, wherein the housing (210) is provided with a through hole (212), the contact rod (220) is arranged through the through hole (212), the housing (210) is provided with a substrate, the contact rod (220) is provided with a limiting part (221) and a brush holder (222) arranged on the substrate in a sliding manner, the limiting part (221) limits the distance that the contact rod (220) extends out of the through hole (212), the contact rod (220) is further provided with a second spring (223), one end of the second spring (223) is abutted to the housing (210), and the other end of the second spring (223) is abutted to the brush holder (222).